<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .tabs {
            background-color: lightgreen;
            border: none;
            font-size: 16px;
            text-align: center;
            padding: 20px;
            color: white;
            float: left;
        }

        .tabs:hover {
            background-color: green;
        }
    </style>
</head>

<body>
    <button class="tabs">1</button>
    <button class="tabs">2</button>
    <button class="tabs">3</button>
    <button class="tabs">4</button>
    <button class="tabs">5</button>
</body>

</html>